title: Semen quality and sex hormone pattern of 29 middle aged men.
abstract: Thirty-nine men with sexual disturbances in middle-age (52-68 years) were included in this study. Semen samples were obtained by masturbation and were analysed for its composition Serum was prepared and analysed for FSH, LH, prolactin and testosterone. Results were compared with the values obtained in a recent study by the authors on a young fertile group (Homonnai et al. - 1980). Hormonal evaluation revealed a significant increase in FSH, LH, and prolactin concentrations, Testosterone levels were not different in the two groups (old v:s young). Nevertheless, accessory gland functions were depressed, semen volume decreased by 30% and fructose secretion by the seminal vesicle was diminished significantly. The average sperm concentration and morphology were not different than in young group but their quality in terms of motility and vitality was depressed. Sperm production by the tests was decreased by 30% compared to the young control group. Increased serum prolactin levels and elevated estrogen activity may be responsible for the sexual disturbances known in older men.
mesh_terms: D000368:Aged; D000375:Aging; D005640:Follicle Stimulating Hormone / Q000378:metabolism; D012739:Gonadal Steroid Hormones / Q000378:metabolism*; D006801:Humans; D007986:Luteinizing Hormone / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D011388:Prolactin / Q000378:metabolism; D012661:Semen / Q000166:cytology / Q000502:physiology*; D013076:Sperm Count; D013081:Sperm Motility; D013091:Spermatogenesis; D013094:Spermatozoa / Q000166:cytology
chemical_list: D012739:Gonadal Steroid Hormones; D011388:Prolactin; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone